I gotta admit, I was pretty close to having the old man die, but with the body count of the day before, I decided to not put actual planned murder on the consciences of a bunch of teenagers, even if Tatiana has killed before. And it wasn't shawn who made Laura stand down. Sure he had a part in it, but it was Wade who reminded her that they all had mutant family that would be slaughtered in a which hunt that would surely start a war between humans and mutants.